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<br />Instruction #: I2.5 <br />Rev 4/3/19 Page 4 <br /> <br />4) Release the sleeve once fully seated. Gently pull up on flow controller to make sure the fittings are <br />properly connected. <br /> <br />When the male and female QT fittings are connected, the flow controller can freely rotate while <br />seated on the canister. This is normal and does not indicate a problem with the connection or <br />the integrity of the seal. However, applying a lateral force to the valve while rotating may result <br />in the loosening of the threaded cap found on the end of the male QT fitting. This threaded cap <br />has been installed using a specific torque. While this torque should be sufficient to prevent the <br />cap from being unthreaded during normal use, it is strongly recommended that the male QT air <br />valve not be rotated if lateral force is applied. <br />5) Verify initial vacuum of the canister. <br />Note: The initial vacuum should be greater than 25 “Hg. You can use the spare vacuum gauge to <br />conduct initial and final vacuum checks or to verify the integrity of flow controller readings. <br />Gauges fitted with Quick Connect fittings will hold residual vacuum after disconnecting from the <br />canister. If you are using the same vacuum gauge to check vacuum levels of multiple canisters, <br />you may want to release this vacuum between readings. Using a 9/16” wrench, loosen the brass